Reversing mechanism



- Oct. 16 ,'1923.

J A DIENNER v REVERSING MECHANISM Original Filed March 13, 1919 gear 3at all times; The bevel pinions 4v and 5 may be held against endwisemovement along the driving shaft 2 by collars 6 or the like.

The alternate clutching of the pinions 4 and 5 to the driving shaft 2 isaccomplished posed faces'ofthe pinions 4 and 5, and project inwardlytherefrom so as to be in the path of rotation of the particular clutchpin 26 :or 27 projecting-from the driving shaft 2 neck portions providedby these annular 30. The diametricalibores'provided in the 2. Theseclutch pins'26 and 2'? are arranged insuitable diametrical boresprovided in the driving shaft 2 adjacent the inner faces of the bevelpinions 4 and 5. An annular.

groovesengagin'gi-in-the slotted ends '28 and 29 respectively ofthepivoted yoke member driving shaft 2 forthe clutch pins 26 and 27 are notstrictly'diametrical, but extend through the-shaftat a slight angle asshown inFigure 1 in 'order that when either ofthe rotation of thedriving shaft 2; 7

pins 26 or 27 is projected into the position of the'pin' 27 the pin (14or15) on the corresponding bevel pinion will be engaged there- 'by andsuch'bevel pinion clutched to the shaft 2. Movement of the pin 26 or pin27' as the easemay' be, into'the'position 'of the pin 26 -'('Figure 1)by"'moving the pin" through the shaft 2 Ma slight-angle, causes the endof the pin connected with the yoke member. 30't0 clear the pins 14 or 15during Tlie yokemember30 is provided with a pair ofi'parallel extending"portions 31 and 1 32 whieli embrac'e" the driving shaft 2. 'A'

transversepin extends diametrically v through-the parallel extendingportions 31 and '32 ofthe yoke membera'nd: through the driving shaft 2,thereby pivotallymounting the yoke memberupon the driving shaft.

ing-inwardly from the bevel gear 3:

i The swinging of the yoke member 30 about its pivot 331s accomplishedautomati cally by means (bf-"a shifter post '16 projectsunning thatpower is being transmitted from the shaft 2 to the shaft 1 by way of thebevel pinion 5, the direction of rotation of the shifter post 16 aboutthe axis of'the 'shaftufwill be as indicatedby the arrow B, assuming'adirection of; rotation A. for the driving-shaft 2. After a predeterminednumber of revolutions of "the shaft 1 in this direction, theshifter-postengages the raised end of the yoke membe -BO. The yokememher will thereupon be swung about its pivot 38, raising the clutchingpin which was previously driving and releasing Said pin from itscorresponding bevel pinion,and lowering the opposite clutching pin. Thisopposite pin 26 will-engage the pin 14 on the other bevel pinion 4, andthe shaft 1 will thereafter be driven through this bevel pinion forapredeterinined number of revolutions in the opposite direction. At theend of such predeterminednumber of revolutions the shifter post 16engages the raised or projecting end of the yoke member 30 andrepeatsthe foregoing unclutching and clutching'op erations for driving theshaft 1 in the opposite direction. The engagement of the shifter post 16with either end of the yoke member 30 begins below or above thehorizontal axis of the shaft 1; that is the contact begins above orbelow this axis and terminates substantially at the axis.

A spring 34,arranged in the driving shaft 2. normally engages the clutchpin 26 to maintainthe pin 26 and consequently the pin 27, through theyoke member 30, posi', tively in each position, preventing shifting ofthe yoke member 30 exceptby the action of'the shifter post 16. Theshort'sturdy clutch pins 26 and 27 are well able to withstand anv'strainconnected with the operation of clutching driving shaft 2 to the bevelpinions 4 and 5, the yoke member. being merely periodically actuated bythe shifter post 16 to shift the clutch pins 26 and 27 into and out'ofoperative position. This yoke 'member' is subjected to compara= tivelysmall'stress and consequently, can be 'made of light inexpensiveconstruction I claim: 1 1. In combination,a first shaft, a pair ofpinions on said shaft; a second shaft. a gear on said second shaftmeshing with said pinionsfone of said shafts driving and the along theoutside of and pivoted directly to said first shaft at an angle to theaxis thereof, said member being alternately rocked about its pivotineffecting the clutching-and unclutching of'said pinions;

! 2. combination. a first shaft", a pair of pinions on said shaft, asecond shaft. a gear on" said second shaft meshing with said pinions,clutch mechanism adapted to alternately clutch said pinions to saidfirstshaft, said clutch mechanism comprising a driving member extendingalong the outside of and pivoted directly to said, first shaft, and

means for I'OCklIigl'Sftld. driving member about its pivot in clutchingand unclutching said pinionsr v y 3; In combination, a drivingshaft, adriven shaft, a pair of bevel pinions loosely mounted on said drivingshaft, a bevel gear meshing with said bevel pinions and mounted on saiddriven shaft, clutch mechanism adapted to alternately clutch said bevelpinions tosaiddriving shaft, said clutch mechanism com prising a drivingmember defining a channel through which said shaft is adapted to extend,and means carried by the bevel gear on said driven shaft for rockingsaid channel to alternatelyclutch said bevel pinions to said drivingshaft.

at. in combination, a drive of driving members on said shaft, a drivenmechanism operatively connectible with said driving members, clutchmechanism adapted to alternately clutch said driving members to saiddrive shaft, said clutch mechanism comprising a lever straddling saiddrive shaft and pivoted thereto, and means carried by said drivenmechanism for actuatin said lever.

0. 111 combination, a shaft, bevel pinions, a yoke-shaped leverembracing said shaft and pivoted thereto, a bevel gear cooperable withsaid pinions, means moving with said bevel gear for alternately rockingsaid lever, and means for effecting an'alternate clutch-- ing engagementbetween said lever and said bevel pinions. V it 6. In combination, ashaft, bevel pinions, a bevel gear cooperable with said pinions, andclutch mechanism adapted to alternately clutch said pinions to saidshaft, said clutch mechanism comprising a driving member shaft, a pair:

and out of operativeposition.

alternately clutch said pinion to said shaft.

7. I combination, a' pair of shafts, a

bevel gear fixed upon one of said shafts, a

pair of bevel pinionsmeshing with said bevel gear and loosely mountedupon the other of said shafts, clutch pin s'mounted' in said shaft forclutching either of said bevel pinions thereto, and a rocking memberextending along the-outside of said latter shaft and operative to shiftsaid clutch pins into and out of operative position, and means movingwith said bevel gear forv periodically cooperating with said rockingmember for shifting said clutch pins alternately into and out ofoperative position.

8. In combination, a shaft, bevel pinions,

a bevel gear cooperable with the pinions,

clutch pins supported said shaft for clutching either of said pinionsthereto, a yoke-shaped rocking member straddling said shaft and pivotedthereto, said rocking member actuating said clutch pins, and means forperiodically swinging said rocking memher to shift said clutch pinsalternately into In witnessiwhereof I hereunto subscribe my name -this12th day of January, 1922.

.- JOHN A. DIENNER.

